Re: [malware-list] [RFC 0/5] [TALPA] Intro to alinuxinterfaceforonaccess scanning

Valdis.Kletnieks
2008-08-15T15:43:20Z

[-- Attachment #1: Type: text/plain, Size: 1054 bytes --]

On Fri, 15 Aug 2008 09:55:37 EDT, Theodore Tso said:
> On Fri, Aug 15, 2008 at 02:22:27PM +0100, douglas.leeder@sophos.com wrote:
> >
> > This is a problem for current anti-malware scanning, as virus data updates
> > come every few hours
>
> Every few hours?!? I hadn't noticed Windows AV programs getting
> updates that frequently, at least not the ones that I've been familiar
> with. (Semantec, Norton, McAfee)

Try running a mail server that provides virus scanning for a large population
of 100K or so mailboxes. You end up pulling from your vendor on an hourly
basis, just because a virus on a burn through your userbase can toast you that
quickly.

Since 9AM Sunday (is now 11:30AM Friday as I write this), we've pulled new
signatures 33 times (one new signature each time in this case) from our vendor.
So yeah, about once every 3-4 hours we get a new updated one for a new variant
of whatever. I've seen times when we've pulled a new signature file 3 hours in
a row, and each time there were 10-12 new variants, so averaging 12/hour...

[-- Attachment #2: Type: application/pgp-signature, Size: 226 bytes --]